Car-ventilator



(No Model.)

E. S. PERRY. JAR VENTILATOR.

Patented Jan. 1l

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EBENEZER S. PERRY, OF NEWT-BEDFORD, MASSACHUSETTS.

CAR-VENTI LTOR.

SPECIFICATION forming part of Letters Patent No. 597,019, dated January1 1, 1898.

Application led May 21, 1897.

.To @ZZ whom it indy concern:

Be it known that l, EBENEZER S. PERRY, a citizen of the United States,residing at New Bedford, in the county of Bristol and State ofMassachusetts, have invented certain new and useful Improvements inCar-ventilators, of which the following is a speciiication.

The object of my invention isto provide a car-ventilator that willseparate the foreign matter-such as dust, cinders, dto-from the outsideair as it passes through the ventilator into the car, while it allowsthe egress of foul or heated air from within the car.

To this end my invention consists in the arrangement and combination ofcertain peculiarly-shaped planes and surfaces with regard to each otherand in providing certain openings through them.

The accompanying drawings illustrate m y invention, in which- Figure lis a front view of my improved carventilator. Fig. 2 is an end view ofthe saine. Fi". 3 is a rear view. Fig. 4 is a view in cross-sectionthrough the dotted line X X of Fig. l, and Fig. 5 is a view inperspective of one of the peculiarly-shaped planes and surfaces whichcompose the main portion of the ventilator.

Similar letters refer to like parts in the several views.

The letter d indicates the base of the ventilator, which is preferablycomposed of a sheet of metal and is provided with the narrowlongitudinal apertures a'.

c indicates a sheet of metal bent into the forms shown in Figs. Li and5, having its upper plane out away, as at c', and provided with theangular plate d, secured to the upper surface thereof and having itsapex pointing outwardly. The parts c are secured by their edges c4 tothose portions of the base a lying between the longitudinal aperturesd', the under side of the lower plane c3 resting on the angular plate dand the points c2 reaching to and secured to the curved portion of theplane nent above it.

e e are end pieces secured to the ends of the parts c and to the base a.and are provided with the apertures c', which open into the spacebetween the upper and lower planes of the parts c, as is clearly shownin Fig. 2.

Serial No. 637,632. (No model-l The parts c are preferably longer thanthe apertures d", as shown in dotted lines, Fig. 3.

In operation, the ventilator being secured in proper position on a carand the car being in rapid motion, a current of air sweeps across theface of the ventilator and enters the saine under the curved edges ofthe parts c and between the upper and lower plan es of the parts c,whereany dust or cinders with which it may be loaded is deposited, while theclear air rises through the opening formed by the edge of the upperplane being cut away and enters the car through the apertures a' in thedirection shown by the arrows. As the air enters the space above theupper plane of the parts c and by the motion of the car is sweptlongitudinally of the ventilator, it strikes the inclined sides of theplates d and causes a strong outward draft in the forward part of theventilator and an inward draft in the rear part of the saine.

It will be observed that the parts c project outwardly and downwardly,and that the coinbination and arrangement of the surfaces and planeswith regard to each other and the corners formed between the ends of theapertures a and the ends of the parts c cause a series of eddies in thecurrent of air entering the ventilator, which eddies cause the dust andcinders contained in said air to be deposited on said planes andsurfaces. The planes of the parts c projecting outwardly and downwardlythe dust and cinders deposited on them falls out of the ventilator byits gravity or is swept therefrom by the current of air which enters andemerges through the forward and rearward openings e.

Having thus described my invention, what I claim, and desire to secureby Letters Pat* ent, is

l. In a ventilator, the combination of the base d, having narrowlongitudinal apertures a; the parts c, secured to said base, betweensaid apertures; and the sides c, having openings c secured to the endsof the parts c, and to the base @when arranged substantially as, and forthe purpose shown and described.

2. In a ventilator, the combination of the base a, having narrowlongitudinal apertures a'; the parts c, of greater length than said apertu res, secured to said base between said ap- IOO ertures; and thesides e, having openings e, to the upper plane of the parts c, and theWhen arranged substantially as shown and desides e, When arrangedsubstantially as shown scribed. and described.

3. In a, Ventilator, Iche combination of the EBENEZER S. PERRY. 5 base61 having narrowlongitudnal apertures Ttnessesz a; the parte c, securedto said base between HENRY W'.l MASON,

said afpertures; the angular plates d, secured J. R. SMITH.

